IP masquerading in Linux 2.2.x allows remote attackers to route UDP packets through the internal interface by modifying the external source IP address and port number to match those of an established connection.Referenceshttp://archives.neohapsis.com/archives/bugtraq/2000-03/0284.htmlhttp://www.securityfocus.com/bid/1078http://www.novell.com/linux/security/advisories/suse_security_announce_48.html
